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- Take a convex lens and fix it on a stand.
- Place it on a table.
- Place a lighted candle at a distance of about \(50\ cm\) from the lens.
- Try to obtain the image of the candle on a paper screen placed on the other side of the lens.
- You may have to move the screen towards or away from the lens to get a sharp image of the flame.
What kind of image did you get? Is it real or virtual?
When the lens is placed at a large distance from the object, the image formed is than the object.
Now vary the distance of the candle from the lens. Try to obtain the image of the candle flame every time on the paper screen by moving it.
What do you observe?
When the lens is moved a little closer to the object, the image formed will be on the screen.
If the convex lens is brought even closer to the object, the image be formed on the screen. But, it can be viewed on the mirror as a image.
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